package com.by.common.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.multipart.support.StandardServletMultipartResolver;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class MvcConfig implements WebMvcConfigurer {

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();//启用默认的servlet配置  处理静态资源
    }

    /**
     * 上传的解析器
     *
     * @return
     */
    @Bean
    public StandardServletMultipartResolver multipartResolver() {
        return new StandardServletMultipartResolver();
    }

    /**
     * 跨域处理
     *
     * @param
     */
//    @Override
//    public void addCorsMappings(CorsRegistry registry) {
//        registry.addMapping("/api/**") //拦截所有以/api开投的请求
//                .allowedOrigins("*")//允许所有域名访问
//                .allowedMethods("get", "post", "put", "delete", "options")//允许 的方法
//                .allowedHeaders("*")
//                .allowCredentials(false)
//                .maxAge(3600);
//
//    }
    @Bean
    public CorsFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();

        config.setAllowCredentials(false);
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");
        config.addAllowedMethod("*");
        config.setMaxAge(3600L);

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", config);
        CorsFilter filter = new CorsFilter(source);
        return filter;
    }
}
